Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual classificação jovem tem a classificação geral de Christian Vande Velde para a equipe Columbia e Mark Cavendish?
 ###Tabelas: CREATE TABLE ohio_locations_ranked_by_per_capita_income (ohio_locations_ranked_by_per_capita_income_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Place VARCHAR, County VARCHAR, Per Capita Income VARCHAR, Median House- hold Income VARCHAR, Population INT, Number of Households INT) CREATE TABLE allsvenskan_2004 (allsvenskan_2004_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Venue VARCHAR, Opponents VARCHAR, Score VARCHAR, Comp VARCHAR, Attendance VARCHAR) CREATE TABLE past_wac_women's_basketball_tournament_results (past_wac_women's_basketball_tournament_results_id AUTO_INCREMENT PRIMARY KEY, Year INT, Winner VARCHAR, Score VARCHAR, Opponent VARCHAR, Location VARCHAR) CREATE TABLE jersey_progress (jersey_progress_id AUTO_INCREMENT PRIMARY KEY, Stage (Winner) VARCHAR, General Classification VARCHAR, Young Classification VARCHAR, Mountains Classification VARCHAR, Sprint Classification VARCHAR, Team Classification VARCHAR) CREATE TABLE list_of_imperial_vicars_1437-1792 (list_of_imperial_vicars_1437-1792_id AUTO_INCREMENT PRIMARY KEY, Interregnum began VARCHAR, Interregnum ended VARCHAR, Duration VARCHAR, Count Palatine of Saxony VARCHAR, Count Palatine of the Rhine VARCHAR)  
SELECT Young Classification FROM jersey_progress WHERE General Classification = christian vande velde AND Team Classification = team columbia AND Sprint Classification = mark cavendish